Water-meter.



H. I. DILTS.

WATER METER.

APPLICATION FILED P31241909 1,083,680. Patented July 23, 12.

mmessas R} 3?? M y. 5M;

ATTDR N EYS To all .whom it may concern:

or high duty STATES PAT F HENRY I. DILTS, OF ELMHU RST, NEW YORK, ASSIGNOB '10 NEPTUNE METER COllI- PANY, OF LONG CITY, NEW YORK, A CORPORATION OF NEW JERSEY.

WATER-METER.

Specification of Letters Patent.

. Patented July 23. 1912.

Application filed February 4, 1909. Serial No. 475,964.

'l 3e it known. that I, HENRY I. Dwrs, a c 1t1 zen of the United States of America, resldmg mElmhurst, in the county of Queens,

in the State of New York, have invented certain' new and useful Improvements in Water-Meters, of which the following is a specification. I

The object of'my inventionis to so construct-an apparatus for measuring the flow of water .or other liquids that'it will register with equal accuracy widely differing rates of flow, that is, small flows and large flows, or in other words, work'equally well under the widely differing conditions, wherethe apparatus has to do low duty This object I attain by constructing what may be called a compound meter, wherein a plurality of metering devices, whether of the same general construction or of diflerent constructions, are adapted, one for relatively high ,duty and another for relatively low duty,

and are combined with means whereby-the varying pressure differential will itself determine the ap ropriate metering device through which the flow shall pass and will shut it off forthe time being from the other metering device.

I prefer to mount the several metering devices in one casing, and in the accompanying drawing I have shown an embodiment of my invention employing two meterin devices of difl'erent constructions mounte in the same casing with a common inflow and a common outflow. I

In the accompanying drawings the figure is aview of a compound meter embodying my invention, the main part of the apparatus being shown in vertical section, but with the re istering tops in elevation.

I have s own within one and the same casingA two metering devices B and D, with their respective registering mechanisms at b and d. In the present instance the meter B is shown as of the turbine type and adapted for relatively high duty work, that is, to register accurately large flows of liquid. The meter D is shown as of the nutating piston type, and adapted a chamber e, from which the incoming liquid may enter the turbine meter B above and below the turbine wheels w, as usual, and thence pass out from the space between the wheels mto a conduit C and into the chamber f leading to the outlet F, provided the valve G at the end of said conduit C is open. The incoming flow of liquid has access to the low duty meter D, from chamber 6, through a conduit H, and after passing through this. meter, it can flow through the conduit h into the outlet chamber fand outlet F, provided the valve J is in the open position shown in the drawing. These two valves G and J thus controlling the outlet conduits or passages from the respective meters and therefore controlling the flows through the two branches containing the two meters are connected to work together so that.when one valve is opened the other is thereby positively moved to the closed position and vice versa. For this purpose, in the construction shown the valve J, which is indicated as a plug .valve has its stem 5.pivoted at 3 to the-back o the valve G, which is illustrated as a weighted check valve pivoted atg to the valve seat. I

When the flow of water is small, the difference of pressure between the inlet and outlet is insuflicient to raise the weighted valve G from its seat, and so long as that condition continues the liquid will flovizi'bnly through the low duty meter 1) and will be registered accurately through that meter.

But when the pressure differential increases sufficiently to raise the valve G, the valve J will thereby be simultaneously closed, and the high duty meter B will come into operation alone, and the large flow will thus be registered accurately by that meter B.

I claim as ,my invention- The combination of a relatively high duty meter, a relatively low duty meter, and a common conduit having branches in which the two meters are respectively located, theln testlmony whereof I have signed my inflow and outflow being common to both, name to this specification, in the presence 10- with a pivoted valve controlling the flow of two subscribing witnesses.

through the high duty meter and a plug valve controlling the flow throiigh the other HENRY DILTS' meter and having its stem pivoted to the Witnesses:

back of the first mentioned valve, as and WALTER ABBE,

for the purpose described. HUBERT Howson- 

